Sustaining a Community Computing Infrastructure for Online Teacher Professional Development: A Case Study of Designing Tapped In

Community computing has recently grown to become a major research area in human–computer interaction. One of the objectives of community computing is to support computer supported cooperative work among distributed collaborators working toward shared professional goals in online communities of practice. A core issue in designing and developing community computing infrastructures – the underlying socio-technical layer that supports communitarian activities – is sustainability. Many community computing initiatives fail because the underlying infrastructure does not meet end user requirements; the community is unable to maintain a critical mass of users consistently over time; it generates insufficient social capital to support significant contributions by members of the community; or, as typically happens with funded initiatives, financial and human capital resource become unavailable to further maintain the infrastructure. Based on more than nine years of design experience with Tapped In – an online community of practice for education professionals – we present a case study that discusses four design interventions that have sustained the Tapped In infrastructure and its community to date. These interventions represent broader design strategies for developing online environments for professional communities of practice.     

基于专业认证构建新型师资管理信息化平台

目前,高校进行工程教育专业认证时,需根据专业认证标准统计大量的师资数据。笔者以国际工程教育专业认证为导向,参照工程教育专业认证标准,分析了目前专业认证师资队伍信息统计存在的问题。结合高校教务系统和科研管理系统等现有数据,利用信息技术,创建互联网+师资管理新型师资管理信息化平台,提高专业认证工作的效率,为专业建设提供服务。     

Android环境下开发定位程序

在移动平台上,LBS（基于位置服务）是目前比较时尚的一个应用。但无论通过哪种方式来实现类似的服务,都必须首先实现一些最基础的功能,即实现定位、追踪和地理编码。使用Eclipse平台进行程序开发,模拟在使用Android操作系统的移动设备上,能够实现这些基本功能。     

Learning About Ourselves: A Review of The Mathematics Teacher in the Digital Era

ABSTRACT

Mathematics Education in the Digital Era is a title that implies the ubiquity of digital technology in our everyday lives. In fact, it can be argued that digital technology is already ubiquitous for many stakeholders in mathematics education. Volume 2 of this series is titled The Mathematics Teacher in the Digital Era, which implies an exploration of the mathematics teacher as individual agent or actor in the experience of teaching and learning mathematics. What is exciting is the book editors' potentially unintended insights into teachers' affective sense, their beliefs, and their subsequent decisions for future pedagogical effort.     

Guest Editors' Introduction: New Directions in the History of Computing

This special issue of the IEEE Annals of the History of Computing surveys a singular quarter century in the history of computing, with a focus on how the field has matured and how its intellectual questions have evolved.     

Exploring School Mathematics as a Source for Pedagogic Reflections in Teacher Education

Abstract

An initiative of professional development was set up with/for secondary mathematics teachers in order to offer them opportunities to engage in deep explorations of school mathematics content. This article reports on how, through these mathematical explorations, teachers did much more than develop their mathematical knowledge as they also engaged unexpectedly in rich pedagogical considerations and reflections about their teaching of mathematics (in this case, the volume of solids). These pointed to a strong connection existing between the teachers’ mathematical knowledge and their “teaching” knowledge, as developing mathematical understandings led them to developments about their teaching. This interconnection is further explored through excerpts where teachers’ teaching orientations and mathematical knowledge appear inextricably intertwined, one influencing the other in a dynamic relationship, leading to enriched comprehensions of the interplay existing between teachers’ knowledge of content and of pedagogy.     

3D User Interfaces: New Directions and Perspectives

Three-dimensional user interfaces (3D UIs) let users interact with virtual objects, environments, or information using direct 3D input in the physical and/or virtual space. In this article, the founders and organizers of the IEEE Symposium on 3D User Interfaces reflect on the state of the art in several key aspects of 3D UIs and speculate on future research.     

信息安全专业人才需求分析与高职培养定位

本文根据信息安全技术发展的方向和市场需求,调查分析并提出我国信息安全专业人才需求类型,提出了高职院校对信息安全专业的培养定位和所对应的岗位技能,以期对信息安全专业的建设与发展具有一定的指导作用。     

New Directions for Systems: A Report Data Base from the 1984 NYU Symposium

The MIS organization is busy with the constant pressure of implementing new systems, making enhancements to existing systems, and maintaining programs, not to mention handling daily production processing and service problems. Unfortunately, it is often too busy to take a good look at its own internal operations and costs. Reviewing the internals of MIS will bolster its image, provide productivity improvements, and demonstrate that MIS is indeed a progressive organization.     

Mario Salvadori and Mauro Picone: From Student and Teacher to Professional Fellowship

The correspondence between Mario Salvadori and Mauro Picone during the years 1934–1972 sheds light on the history of the Italian Institute for the Applications of Calculation. The IAC was a groundbreaking institution for mathematics in Italy, and great attention was given to the new means of mechanical calculation, first analogue, then electronic. It was in relationship to this that Mario Salvadori consulted with his former professor. The correspondence allows us to see also how that relationship changed from one of student-teacher to one of fellowship between professionals.

The books and individuals from whom I have learned what I know of numeric calculus are too numerous to list here, but I wish to express now my gratitude to Prof. Mauro Picone, director of the Istituto Nazionale per le Applicazioni del Calcolo (the Italian laboratory for applied mathematics which will house the International Center of Mechanical Calculus, recently founded), who was the first to teach me to love numbers while I was his student at the University of Rome some 20 years ago. M. Salvadori, Preface to Numerical Methods in Engineering, New York, Prentice-Hall, 1952

     

Using the Unfamiliar to Problematize the Familiar: The Case of Mathematics Teacher In-Service Education

Abstract

Schoenfeld's theory of teaching (Schoenfeld, 1998 Schoenfeld, A. H. 1998. Toward a theory of teaching-in-context. Issues in Education, 4(1): 1–94. [Crossref] , [Google Scholar], 1999 Schoenfeld, A. H. 1999. Models of the teaching process. Journal of Mathematical Behavior, 18: 243–261.  [Google Scholar]) describes, explains, and predicts teacher practice and, more specifically, teachers’ decision-making processes, in terms of their knowledge, beliefs, and goals. On the basis of this theoretical model of the teaching process, we designed a workshop with the purpose of providing mathematics teachers with analytical tools with which to reflect upon their own practice. Two rounds of this workshop were implemented with teacher leaders and mathematics educators. Participants collectively watched videotapes of teaching practices that included examples of a range of teacher decisions and actions. The tapes served as stimuli for both spontaneous and guided conversations about teacher knowledge, goals, and beliefs. Initially, two main kinds of comments predominated: evaluative and research oriented. As the workshops progressed, a third and potentially more productive mode of analysis of teacher practices evolved. We briefly describe the design of the workshops, their implementation, and the main “watching modes” and comments. It appears that teachers and researchers can be induced to think about why other teachers (and perhaps themselves) make particular instructional moves, and that they can engage substantially with the roles of knowledge, goals and beliefs in shaping instructional choices.     

Personal Development Systems for the Professional Programmer

Recent advances in hardware technology–VLSI, graphics, voice, powerful personal computers–can be brought to bear on problems of software development.     

射频仿真系统精度校准的软件新方法研究

目前国内已有多套射频仿真系统,但关键指标之一--阵面角位置精度,在低频段(1-2GHz)通过硬件方法精度很难提高,经常难以达到试验使用要求。所以该文尝试通过软件的方法来校准射频仿真系统,对射频阵列面角精度误差进行深入分析,分解为阵元定位的系统误差和系统环境的随机误差,通过对系统误差的分布特点的总结并进行相应的理论推导和分析,得出一种从软件上可预先设置的校准算法,得到精确的阵列修正矩阵。最后,对这种软件的校准方法进行了实验验证,精度比原系统提高4-5倍,使得射频仿真系统整体性能大大提升一步。     

基于ASP组件技术的课堂交流区的设计与开发

在线课堂交流是网络课堂教学模式的一部分,ASP技术可以轻松实现这一在线课堂交流平台.利用ASP内置组件FileSystemObject读写文本文件的功能,不仅可以把交流信息存放于文本文件中,也可以将文本信息实时显示出来.